cppu/source/threadpool/thread.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <sal/config.h>
  21
  22 #include <cstdlib>
  23 #include <osl/diagnose.h>
  24 #include <uno/threadpool.h>
  25
  26 #include "thread.hxx"
  27 #include "jobqueue.hxx"
  28 #include "threadpool.hxx"
  29
  30 using namespace osl;
  31 using namespace rtl;
  32
  33 namespace cppu_threadpool {
  34
  35
  36     ThreadAdmin::ThreadAdmin(): m_disposed(false) {}
  37
  38     ThreadAdmin::~ThreadAdmin()
  39     {
  40 #if OSL_DEBUG_LEVEL > 1
  41         if( m_lst.size() )
  42         {
  43             fprintf( stderr, "%lu Threads left\n" , static_cast<unsigned long>(m_lst.size()) );
  44         }
  45 #endif
  46     }
  47
  48     bool ThreadAdmin::add( rtl::Reference< ORequestThread > const & p )
  49     {
  50         MutexGuard aGuard( m_mutex );
  51         if( m_disposed )
  52         {
  53             return false;
  54         }
  55         m_lst.push_back( p );
  56         return true;
  57     }
  58
  59     void ThreadAdmin::remove_locked( rtl::Reference< ORequestThread > const & p )
  60     {
  61         ::std::list< rtl::Reference< ORequestThread > >::iterator ii = ::std::find( m_lst.begin(), m_lst.end(), p );
  62         if( ii != m_lst.end() )
  63         {
  64             m_lst.erase( ii );
  65         }
  66     }
  67
  68     void ThreadAdmin::remove( rtl::Reference< ORequestThread > const & p )
  69     {
  70         MutexGuard aGuard( m_mutex );
  71         remove_locked( p );
  72     }
  73
  74     void ThreadAdmin::join()
  75     {
  76         {
  77             MutexGuard aGuard( m_mutex );
  78             m_disposed = true;
  79         }
  80         for (;;)
  81         {
  82             rtl::Reference< ORequestThread > pCurrent;
  83             {
  84                 MutexGuard aGuard( m_mutex );
  85                 if( m_lst.empty() )
  86                 {
  87                     break;
  88                 }
  89                 pCurrent = m_lst.front();
  90                 m_lst.pop_front();
  91             }
  92             pCurrent->join();
  93         }
  94     }
  95
  96
  97     ORequestThread::ORequestThread( ThreadPoolHolder const &aThreadPool,
  98                                     JobQueue *pQueue,
  99                                     const ByteSequence &aThreadId,
 100                                     bool bAsynchron )
 101         : m_aThreadPool( aThreadPool )
 102         , m_pQueue( pQueue )
 103         , m_aThreadId( aThreadId )
 104         , m_bAsynchron( bAsynchron )
 105     {}
 106
 107     ORequestThread::~ORequestThread() {}
 108
 109     void ORequestThread::setTask( JobQueue *pQueue,
 110                                   const ByteSequence &aThreadId,
 111                                   bool bAsynchron )
 112     {
 113         m_pQueue = pQueue;
 114         m_aThreadId = aThreadId;
 115         m_bAsynchron = bAsynchron;
 116     }
 117
 118     bool ORequestThread::launch()
 119     {
 120         // Assumption is that osl::Thread::create returns normally with a true
 121         // return value iff it causes osl::Thread::run to start executing:
 122         acquire();
 123         ThreadAdmin & rThreadAdmin = m_aThreadPool->getThreadAdmin();
 124         osl::ClearableMutexGuard g(rThreadAdmin.m_mutex);
 125         if (!rThreadAdmin.add( this )) {
 126             return false;
 127         }
 128         try {
 129             if (!create()) {
 130                 std::abort();
 131             }
 132         } catch (...) {
 133             rThreadAdmin.remove_locked( this );
 134             g.clear();
 135             release();
 136             throw;
 137         }
 138         return true;
 139     }
 140
 141     void ORequestThread::onTerminated()
 142     {
 143         m_aThreadPool->getThreadAdmin().remove( this );
 144         release();
 145     }
 146
 147     void ORequestThread::run()
 148     {
 149         osl_setThreadName("cppu_threadpool::ORequestThread");
 150
 151         try
 152         {
 153             while ( m_pQueue )
 154             {
 155                 if( ! m_bAsynchron )
 156                 {
 157                     if ( !uno_bindIdToCurrentThread( m_aThreadId.getHandle() ) )
 158                     {
 159                         OSL_ASSERT( false );
 160                     }
 161                 }
 162
 163                 while( ! m_pQueue->isEmpty() )
 164                 {
 165                     // Note : Oneways should not get a disposable disposeid,
 166                     //        It does not make sense to dispose a call in this state.
 167                     //        That's way we put it an disposeid, that can't be used otherwise.
 168                     m_pQueue->enter(
 169                         sal::static_int_cast< sal_Int64 >(
 170                             reinterpret_cast< sal_IntPtr >(this)),
 171                         true );
 172
 173                     if( m_pQueue->isEmpty() )
 174                     {
 175                         m_aThreadPool->revokeQueue( m_aThreadId , m_bAsynchron );
 176                         // Note : revokeQueue might have failed because m_pQueue.isEmpty()
 177                         //        may be false (race).
 178                     }
 179                 }
 180
 181                 delete m_pQueue;
 182                 m_pQueue = 0;
 183
 184                 if( ! m_bAsynchron )
 185                 {
 186                     uno_releaseIdFromCurrentThread();
 187                 }
 188
 189                 m_aThreadPool->waitInPool( this );
 190             }
 191         }
 192         catch (...)
 193         {
 194             // Work around the problem that onTerminated is not called if run
 195             // throws an exception:
 196             onTerminated();
 197             throw;
 198         }
 199     }
 200 }
 201
 202 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */